TWI487918B - Adjusting method for planar antenna and structure for the same - Google Patents

Description

Flat antenna correction adjustment method and structure thereof

The invention relates to an antenna, in particular to a method for correcting adjustment of a panel antenna and a structure thereof.

It is known that the current ceramic flat panel antenna has a carrier having a radiating metal surface on the surface thereof, the back side of the carrier having a grounded metal surface, the carrier having a signal feeding end passing through the carrier and the radiation The metal surface is electrically connected. After the ceramic panel antenna is completed, the first task is to test the electrical characteristics of the ceramic panel antenna in accordance with the manufacturing specifications. Because the ceramic panel antenna is produced in the same way because of the inconsistent size of the radiation metal sheet, different electrical characteristics are produced. The finished ceramic panel antenna must be tested for electrical characteristics.

When the ceramic panel antenna is detected, the ceramic panel antenna is electrically connected to the connector of the wireless frequency (RF) component test coaxial cable for reading the electrical characteristics of the ceramic panel antenna, and the instrument simultaneously displays the electrical A Smith chart of the characteristics. After the Smith graph is displayed, the examiner will visually see whether the Smith chart displayed by the instrument is the same as the production specification. If it is different, the detector must manually correct the ceramic flat panel antenna. The radiant metal surface is corrected and corrected, and the Smith chart and the production specification displayed by the instrument are corrected. At the same time, the trimming action is stopped.

Since the electrical characteristics of the ceramic flat panel antenna are corrected and adjusted, the laser engraving machine cuts any straight side or any straight side of the four straight sides of the radiating metal surface, and is subjected to laser setting by the laser engraving machine. The limitation makes it impossible to make fine frequency cut adjustments, so the adjustment of the frequency variation of the panel antenna is limited.

Therefore, the main object of the present invention is to solve the problem that the single cutting amount cannot be finely adjusted. Therefore, when the laser processing is used, the setting of the switching of the laser engraving machine is controlled, and the effect of cutting the dotted line is produced, and the single cutting is reduced. The amount of cut size. It can be seen from the simulation results and the experimental results that the processing method can perform small antenna frequency variation adjustment, and does not have an excessive influence on the characteristics of the Smith Chart feeding impedance.

In order to achieve the above object, the present invention provides a method for correcting and adjusting a flat panel antenna, wherein the detecting device drives the laser engraving machine to perform frequency adjustment adjustment on the completed panel antenna, including: preparing a completed planar antenna, The flat panel antenna has a carrier, the top mask of the carrier has a radiating metal surface, and the radiating metal surface has four straight sides; the flat antenna is placed on the test fixture of the detecting device; and the detecting device drives the lightning The laser engraving machine performs the cutting mode of the opening and closing, so that the laser engraving machine cuts the four straight sides or any two straight sides of the radiating metal surface of the panel antenna by a dotted line; and the radiating metal of the flat antenna After the frequency change of the surface is adjusted, it is checked by the detecting device. If the frequency change amount adjustment is in compliance with the required value, if the frequency change amount adjustment is required, the detection and the frequency change amount adjustment operation of the panel antenna are ended.

The carrier of the panel antenna is a ceramic material, and the signal feeding portion having a columnar shape is electrically connected to the surface of the radiation metal. The signal feeding portion penetrates the back surface of the carrier, and the signal feeding portion is not opposite to the back of the carrier. It has a grounded metal surface electrical connection.

Wherein, the radiant metal surface further comprises two diagonal bevels.

The detecting device includes at least: a micro processing unit, a storage unit, an operation interface, and a display.

Wherein, when cutting the dotted line, it is necessary to cut in equal parts to adjust the frequency variation of the panel antenna.

The dotted line includes a plurality of cutting segments and a plurality of solid segments connected.

Wherein, the cutting depth of the cutting segment is greater than 0.01 mm.

Wherein, the two dashed edges are perpendicularly connected to each other or parallel to the radiation metal surface.

In order to achieve the above object, the present invention further provides a planar antenna structure, comprising: a carrier having a top surface; a radiating metal surface disposed on a top surface of the carrier, wherein the radiating metal surface has The two dotted lines are adjusted after the frequency change.

The carrier of the planar antenna structure is a ceramic material, and the signal feeding portion having a columnar shape is electrically connected to the radiating metal surface, and the signal feeding portion penetrates the On the back side of the carrier, the signal feeding portion is not electrically connected to a grounded metal surface of the back surface of the carrier.

Wherein, the radiant metal surface further comprises two diagonal bevels.

Wherein, the radiating metal surface further comprises two straight sides, the two straight sides connecting one oblique side and the two broken side.

The dotted line includes a plurality of cutting segments and a plurality of solid segments connected.

Wherein, the dotted line is provided on the radiant metal surface in equal parts.

Wherein, the two dashed edges are perpendicularly connected to each other or parallel to the radiation metal surface.

Wherein, the cutting depth of the cutting segment is greater than 0.01 mm.

In order to achieve the above object, the present invention further provides a planar antenna structure, comprising: a carrier having a top surface; a radiating metal surface disposed on a top surface of the carrier; wherein the radiating metal surface has The four dotted lines are adjusted after the frequency change.

The carrier of the planar antenna structure is a ceramic material, and the signal feeding portion having a columnar shape is electrically connected to the radiating metal surface, and the signal feeding portion penetrates the back surface of the carrier, and the signal feeding portion is not connected to the carrier The back has a grounded metal surface that is electrically connected.

Wherein, the radiant metal surface further comprises two diagonal bevels.

Wherein, the two oblique sides are connected to the four dotted lines.

The dotted line includes a plurality of cutting segments and a plurality of solid segments connected.

Wherein, the dotted line is provided on the radiant metal surface in equal parts.

Wherein, the cutting depth of the cutting segment is greater than 0.01 mm.

100~108‧‧‧Steps

1‧‧‧Tablet antenna

11‧‧‧ Carrier

12‧‧‧radiation metal surface

121‧‧‧Bevel

122‧‧‧ Straight line

122a‧‧‧dotted side

1221a‧‧‧Cutting section

1222a‧‧‧solid line

13‧‧‧Signal Feeding Department

The first figure is a schematic flow chart of the method for correcting the adjustment of the panel antenna of the present invention.

The second figure is a schematic view of the radiant metal surface of the panel antenna of the present invention.

The third figure is a schematic top view of the dashed side of the two straight sides of the radiating metal surface of the panel antenna of the present invention.

The fourth figure is a schematic top view of a broken line of four straight sides of a radiating metal surface of the panel antenna of the present invention.

The fifth figure is a schematic diagram of the results of the Smith curve of the trimmed side of the two straight sides of the radiating metal surface of the third figure.

The sixth figure is a schematic diagram showing the results of the Smith curve of the four-sided side of the radiant metal surface of the fourth straight line.

The technical content and detailed description of the present invention are described below with reference to the following drawings: Please refer to the first, second, third and fourth figures, which is the flow of the method for correcting and adjusting the planar antenna of the present invention and the radiation metal surface of the panel antenna is not cut. And the top view of the two straight sides of the radiating metal surface of the panel antenna and the dotted line of the four straight sides. As shown in the figure: the method for correcting and adjusting the panel antenna of the present invention, first, as in step 100, a completed panel antenna 1 is provided. The panel antenna 1 has a carrier 11 having a radiating metal surface on a top surface thereof. 12, the radiant metal surface 12 has two diagonally opposite oblique sides 121 and four straight sides 122. Further, the signal feeding portion 13 having a columnar shape on the carrier 11 is electrically connected to the radiating metal surface 12, and the signal feeding portion 13 penetrates the carrier and passes through the back surface of the carrier 11 (not shown), and It is electrically connected to a grounded metal surface (not shown) on the back surface of the carrier 11. In the present figure, the carrier 11 is a ceramic material.

Step 102: The detection device sets a parameter value of electrical characteristics (such as center frequency, bandwidth, and return loss) of the panel antenna, and the display on the detecting device displays a Smith chart and an s-parameter graph. In the figure, the detecting device (not to be described in the prior art) includes at least a micro processing unit, a storage unit, an operation interface and a display.

Step 104: Place the panel antenna 1 on a test fixture of an RF (Radio Frequency) component of the detecting device (hereinafter referred to as an RF component test fixture), so that the signal feeding end of the ceramic panel antenna and the RF The component test fixture is electrically connected. In the figure, the RF component test fixture is a radio frequency coaxial cable connector that is electrically coupled to the signal feed end of the ceramic panel antenna.

Step 106: When the panel antenna 1 needs to adjust the frequency variation, the laser engraving machine is driven by the detecting device, and the laser engraving machine is driven by the detecting device to control the opening and closing control mode to make the mine The engraving machine performs the effect of forming the dashed edge 122a on the four straight sides 122 or any two straight sides 122 of the radiating metal surface 12 of the panel antenna 1 to form the dashed edge 122a, and the equal amount is required when cutting the dashed side 122. The cutting is performed to adjust the frequency variation of the panel antenna 1 (as shown in the third and fourth figures).

Step 108: After the frequency change amount of the radiation metal surface of the panel antenna is adjusted, if the detection device detects whether the frequency change amount adjustment meets the requirements, if it is not, then return to the step 106; if the frequency change amount is adjusted If it meets the requirements, it will end Detection and adjustment of the frequency variation of the panel antenna.

Please refer to the third and fifth figures, which are schematic diagrams of the dashed side cutting of the two straight sides of the radiating metal surface of the panel antenna of the present invention and the Smiths curve of the trimming of the two straight sides of the radiating metal surface of the third figure. . As shown in the figure: after the panel antenna 1 of the present invention is engraved by a laser engraving machine, the panel antenna 1 has a carrier 11 having a top surface having a radiating metal surface 12, the radiating metal surface 12 having two oblique The oblique side 121 corresponding to the diagonal corner is connected with two straight side edges 122 and two double broken side edges 122a. The two broken side edges 122a are perpendicularly connected to each other or parallel to the other two straight sides 122. The dotted side 122a The method includes a plurality of cutting segments 1221a and a plurality of solid segments 1222a connected. The cutting section 1221a is also cut of metal material by a laser engraving machine to expose the top surface of the carrier 11.

And the cutting depth (or width) D of the cutting segment 1221a will affect the frequency adjustment variation of the panel antenna 1 and the following table illustrates:

Therefore, after the above description, it is understood that the cutting depth D of the laser cutting section 12.2a of the broken line side 122 of the present invention is larger than 0.01 mm or more.

Please refer to the fourth and sixth figures, which are four of the radiating metal faces of another panel antenna of the present invention. The schematic diagram of the top view of the dotted line on the straight line side and the Smith line curve of the four-sided side of the radiant metal surface cut by the dotted line side. As shown in the figure: after the panel antenna 1 of the present invention is engraved by a laser engraving machine, the panel antenna 1 has a carrier 11 having a top surface having a radiating metal surface 12, the radiating metal surface 12 having two oblique Diagonally corresponding oblique sides 121, the two oblique sides 121 are connected to four broken side 122a, and the dotted side 122a comprises a plurality of cutting segments 1221a and a plurality of solid segments 1222a connected.

And the cutting depth (or width) D of the cutting segment 1221a will affect the frequency adjustment variation of the panel antenna 1 and the following table illustrates:

Therefore, after the above description, it is understood that the cutting depth D of the cut portion 122a of the broken line side 122 of the present invention is larger than 0.01 mm or more.

The above are only the preferred embodiments of the present invention and are not intended to limit the scope of the present invention. That is, the equivalent changes and modifications made by the scope of the patent application of the present invention are covered by the scope of the invention.

100~108‧‧‧Steps

Claims (7)

A method for correcting adjustment of a panel antenna is to use a detecting device to drive a laser engraving machine to adjust a frequency variation of the fabricated panel antenna, comprising: a) preparing a completed planar antenna, the panel antenna having a carrier The top mask of the carrier has a radiating metal surface having four straight sides and two diagonal bevels, the carrier having a columnar signal feeding portion and the radiating metal surface electrical Connecting, the signal feeding portion penetrates the back surface of the carrier, the signal feeding portion is not electrically connected to the back surface of the carrier; b) placing the panel antenna on the test fixture of the detecting device; c) The laser engraving machine drives the laser engraving machine to open and close the control mode, so that the laser engraving machine cuts the four straight sides or any two straight sides of the radiating metal surface of the panel antenna by the dotted line, and the dotted line is cut. When the edge is cut in equal parts, the frequency variation of the panel antenna is adjusted, and the dotted edge includes a plurality of cutting segments and a plurality of solid segments connected, the two dotted edges Connected to each other perpendicularly or in parallel with each other on the surface of the radiating metal; and d), after the frequency change of the radiating metal surface of the panel antenna is adjusted, if the detecting device detects whether the frequency change amount is adjusted as required, if it is a frequency When the amount of change adjustment is in accordance with the requirements, the detection and the frequency change amount adjustment operation of the panel antenna are ended. The tablet antenna correction adjustment method of claim 1, wherein the detecting device of step b includes at least: a micro processing unit, a storage unit, an operation interface, and a display. The method for correcting adjustment of a panel antenna according to claim 2, wherein The cutting depth of the cutting section is greater than 0.01 mm. A planar antenna structure includes: a carrier having a top surface, the carrier having a column-shaped signal feeding portion, the signal feeding portion penetrating the back surface of the carrier, the signal feeding portion not having a back surface of the carrier The grounding metal surface is electrically connected; a radiating metal surface is disposed on the top surface of the carrier and electrically connected to the signal feeding portion, the radiating metal surface has two diagonal oblique sides, and the radiation The metal surface further includes two straight sides, the two straight sides connecting one oblique side and the two broken side, the dotted side comprising a plurality of cutting segments and a plurality of solid line segments connected, the dotted edge being disposed in an equal amount On the radiant metal surface, the two dotted sides are perpendicularly connected to each other or parallel to each other on the radiant metal surface; wherein the radiant metal surface has two dotted lines whose frequency variation is adjusted. The planar antenna structure of claim 4, wherein the cutting depth of the cutting segment is greater than 0.01 mm. A planar antenna structure includes: a carrier having a top surface, the carrier having a column-shaped signal feeding portion, the signal feeding portion penetrating the back surface of the carrier, the signal feeding portion not having a back surface of the carrier The grounding metal surface is electrically connected; a radiating metal surface is disposed on the top surface of the carrier and electrically connected to the signal feeding portion, and the radiating metal surface has two diagonal oblique sides, the two oblique sides Connecting the four dashed edges, the dashed edge includes a plurality of cutting segments and a plurality of solid segments connected in an equal amount on the radiating metal surface; wherein the radiating metal surface has four frequency variations The amount of dotted line after adjustment. The planar antenna structure of claim 6, wherein the cutting depth of the cutting segment is greater than 0.01 mm.